Maurice Chédel, Public domain, via Wikimedia Commons.
This picture of a 'shanty town' in Peru looks quite similar to the Barracks Settlement in Yume Nikki! Especially how it is located in a desert. This lines up with the other Peruvian references in Yume Nikki, namely the Paracas style art and the Inca motif on Madotsuki's character design.
The Paracas culture made the best art in the universe
(they are also the inspiration for a lot of the imagery in Yume Nikki)